<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>浮动-清除浮动</title>
<style>
  .father {
    margin: 10px auto;
    width: 1200px;
    /* height: 300px; */
    background-color: pink;
  }

  .left {
    float: left;
    width: 200px;
    height: 300px;
    background-color: skyblue;
  }

  .right {
    float: right;
    width: 950px;
    height: 300px;
    background-color: orange;
  }

  .bottom {
    height: 100px;
    background-color: brown;
  }

  .clearfix {
    clear: both;
  }

</style>
</head>
<body>
<div class="father">
  <div class="left"></div>
  <div class="right"></div>
  <div class="clearfix"></div>
</div>
<div class="bottom"></div>
</body>
</html>